Abstract: Due to the unreasonable urban planning in advance and the lack of sufficient space reserved for port storage services, land reclamation has become a method to improve the storage capacity of a city. The riprap method is generally used in the reclamation area. When other buildings are built on the upper part of the reclamation area, especially the pile foundation, riprap will make the construction of cast-in-place pile extremely difficult, Percussion drilling is often used for construction in China. This method has low construction efficiency and serious hole expansion. This paper introduces a band-pass drilling pile foundation construction technology to solve the difficult problem of cast-in-place pile construction.